... and some JSON parsers are choking on this.

More precisely, the first "geo" (line 17) is used as the common namespace prefix for http://www.opengis.net/ont/geosparql#, while the second one (line 1959) is a shortcut for http://schema.org/geo .

I think the best solution is to remove line 17:

• the other declaration of "geo" is more directly useful for schema.org users
• nowhere in the context is the geo: prefix used
• in all the parsers that I have tested, line 1959 overrides line 17 anyway